ESSAY ON SECRETION. 
3 
try, and I feel confident that a consideration of the subject 
is still worth the attention of all breeders and supporters of 
the Turf. It surely does not follow that, because you cannot 
make rules to meet all evils, you are, therefore, not to 
have any rides at ail; and in the latter category, it must be 
admitted, there have been and still are all entries, either for 
racing or breeding purposes. 
For a proof of the daily increasing defects of the Stud 
Book, as a record, I have only to advert to the great increase 
of half-bred (so-called) horses, now successfully performing 
on the race-course. And were “ Umpire” to win the 
Derby, it will not entitle him to a place in the Stud Book, 
although the veriest mongrel of an Arab, or a Barb (so-called) 
would at once be admitted to this distinction. Upon this 
subject I may send you, at a future period, some remarks; 
for we are now arrived at the helpless condition of being 
unable to give anything like a satisfactory answer to the 
simple question, What is now understood to be meant by 
the term “ thorough-bred horse.” 
Ever faithfully yours. 
To the Editors of i The Veterinarian 
AN ESSAY ON SECRETION, WITH SOME OP THE 
CIRCUMSTANCES WHICH MODIFY THAT 
PROCESS IN ANIMALS. 
By Henry Corby, M.R.C.Y.S., late Demonstrator of 
Anatomy at the Royal Veterinary College. 
Read before the Members of the Veterinary Medical Association , 
during the session 1858-9^ and published at the request of the 
Council. 
Having no desire to arrogate to myself that to which I 
have no right, and thus to appear decked with the plumes of 
others, at the outset I beg to state that from the works of 
the leading writers of the day on physiology, I have collected 
most of the facts that will be met with in this essay. These 
I have compared, so as to arrive at a correct conclusion on 
this important and interesting subject, of which I can offer 
you at best only an outline: nevertheless, I have striven to 
avoid a partial or one-sided view of it,having nofanciedtheories 
